ELLIPSOMETRIC DETERMINATION OF THE OPTICAL-CONSTANTS OF C60 (BUCKMINSTERFULLERENE) FILMS

被引：244
|
作者：
REN, SL
WANG, Y
RAO, AM
MCRAE, E
HOLDEN, JM
HAGER, T
WANG, KA
LEE, WT
NI, HF
SELEGUE, J
EKLUND, PC
机构：
[1] Department of Physics and Astronomy, University of Kentucky, Lexington
来源：
APPLIED PHYSICS LETTERS | 1991年 / 59卷 / 21期
关键词：
D O I：
10.1063/1.105907
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report the first ellipsometric measurement of the fundamental optical constants (n,k) of C60 films deposited on Si(100) and Au overcoated Si(100) substrates. We obtain a highest occupied molecular orbital-lowest unoccupied molecular orbit (HOMO-LUMO) gap value of 2.3 eV, slightly larger than the gap values obtained from the x-ray photoelectron spectroscopy and electron-energy-loss spectroscopy experiments. The structure observed in the UV is discussed in terms of single-electron excitations across the HOMO-LUMO gap.
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页码：2678 / 2680
页数：3
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